Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
Other 2016 diesel models scheduled to debut, such as the 2016 Passat TDI, will not be offered anymore. Volkswagen has since committed to electric cars, and itâs possible the company will not sell a TDI diesel in the U.S. ever again. 2013â2016 Volkswagen Touareg TDI.